import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 25228
 * Date: 2024-09-30
 * Time: 19:15
 */
public class Main9 {
    public static void main(String[] args) {
        Scanner in =new Scanner(System.in);
        double money = in.nextDouble();
        double rate = in.nextDouble();
        int year = in.nextInt();
        ProfitCalculator pc = new ProfitCalculator();
        System.out.printf("%.2f", pc.calProfit(money, rate, year));
    }
}


class ProfitCalculator {
    double calProfit(double money, double rate, int year) {
        return money*Math.pow(1+rate/100,year);
    }
}